#include <iostream>
#include <cstdlib>
#include <ctime>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <unistd.h>
#define SHM_KEY 1234
#define N 100
using namespace std;

int main() {
        int total=N*N;
        int shmSize=total*sizeof(int);
        //Create shared memory segment
        int shmId=shmget(SHM_KEY,shmSize,IPC_CREAT|0666);
        if (shmId<0) {
               cout << "Error mem create" << endl;
               return 1;
        }
        int *matrix=(int *) shmat(shmId,NULL,0);

        for (int i=0;i<total;i++) {
                 matrix[i]=rand()%100;
        }
        cout << "Shared mem id=" << shmId << endl;
        shmdt(matrix);
        return 0;
}